rack and pinion leaking?

Hey guys, I recently just finished replacing all 4 ball joints on my silverado and outer tie rods, however while my truck was sitting overnight last night, on the drivers side tie rod there was a puddle of black liquid that was leaking from a small cut in the end of the bellow(the dust boot looking thing over the inner tie rod), i checked my power steering fluid and it is full and the color is normal... I dont know what this fluid is... I dont even know if there should be fluid in the bellow or if maybe its water that accumulated overtime and drained out as the tie rod was hanging overnight...
should i be worried guys?
thanks!

If your power steering pump is full and you've never had to add any fluid, I'd say it was probably water, since you mentioned a cut in the bellows. You need to repair or replace that bellows. Water and dirt in there can cause some real nasty problems for you.
Good Luck and God Bless